{
  "id": "2409.09117",
  "version": "v1",
  "published": "2024-09-13T18:00:01.000Z",
  "updated": "2024-09-13T18:00:01.000Z",
  "title": "Berry phase effects on the transverse conductivity of Fermi surfaces and their detection via spin qubit noise magnetometry",
  "authors": [
    "Mark Morgenthaler",
    "Inti Sodemann Villadiego"
  ],
  "comment": "5 pages (main text), 6 pages (supplementary), 2 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The quasi-static transverse conductivity of clean Fermi liquids at long wavelengths displays a remarkably universal behaviour: it is determined solely by the radius of curvature of the Fermi surface and does not depend on details such as the quasi-particle mass or their interactions. Here we demonstrate that Berry phases do not alter such universality by directly computing the transverse conductivity of two-dimensional electronic systems with Dirac dispersions, such as those appearing in graphene and its chiral multilayer variants. Interestingly, however, such universality ceases to hold at wave-vectors comparable to the Fermi radius, where Dirac fermions display a vividly distict transverse conductivity relative to parabolic Fermions, with a rich wave-vector dependence that includes divergences, oscillations and zeroes. We discuss how this can be probed by measuring the $T_1$ relaxation time of spin qubits, such as NV centers or nuclear spins, placed near such 2D systems.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-09-13T18:00:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin qubit noise magnetometry",
      "berry phase effects",
      "fermi surface",
      "distict transverse conductivity relative"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}